Effect of Green Body Heating Rate on Mechanical and Physical Properties of Crucible Materials Made from Evaporation Boats Waste

Abstract

Limbah evaporation boats merupakan limbah yang tidak dapat terurai tetapi memiliki daya tahan panasyang sangat tinggi sehingga perlu dimanfaatkan. Penelitian ini bertujuan untuk mengetahui pengaruh darilaju pemanasan terhadap sifat mekanis dan fisis material crucible yang terbuat dari limbah evaporation boats.Variasi laju pemanasan yang digunakan yaitu 2, 4, 6, 8, dan 10°C/menit saat proses pembakaran di dalam furnace.Komposisi material crucible menggunakan perbandingan berat limbah evaporation boats 70%, grafit 15%,kaolin 7,5%, castable SK-34 7,5%, dan 15% air bersih dari total berat campuran. Setiap bahan diayak denganayakan 100 mesh. Bahan tersebut dicetak menjadi spesimen sesuai standar ASTM C373-72 dengan tekanankompaksi sebesar 40 MPa. Pembakaran menggunakan temperatur 1000°C dan waktu penahanan selama 2 jam.Spesimen diuji kuat tekan, kekerasan Vickers, densitas, struktur mikro. Kuat tekan tertinggi sebesar 29,829 MPapada laju pemanasan lambat 2°C/menit. Nilai kekerasan terendah sebesar 12,64 HVN pada laju pemanasan10°C/menit. Nilai densitas tertinggi sebesar 2,39 g/cm 3 pada laju pemanasan 2°C/menit, sedangkan nilai terendahadalah 1,99 g/cm 3 pada laju pemanasan cepat 10°C/menit. Hasil struktur mikro pada laju pemanasan 2°C/menitmenghasilkan struktur distribusi fasa yang paling seimbang dan kepadatan terbaik pada material crucible.

The Influence of Molasses Concentration on the Physical and Mechanical Properties of Evaporation Boat Waste-Based Crucibles

“…According to their research, the evaporation boat waste contains a high concentration of Boron (B) and Nitrogen (N), accounting for 43.68% and 34.98% respectively. The evaporation boat waste exhibits the main constituents of Boron and Nitrogen [5]. The results of this investigation align with the research carried out by Tian et al ( 2022).…”

“…According to the findings of this study, the weight percentage of the BN phase is consistently higher compared to the weight percentage of the TiB2 phase in all of the crucible specimens that were fabricated. The results of this study align with the research carried out by Habiby et al (2022). According to their research, the evaporation boat waste contains a high concentration of Boron (B) and Nitrogen (N), accounting for 43.68% and 34.98% respectively.…”

“…1) are critical components in the process of plastic metallization, enabling controlled evaporation of metals onto plastic surfaces to acquire the appropriate metallic characteristics. However, to guarantee the efficiency of the plastic metallization process, it is necessary to replace the evaporation boats every 15 h [1], [5].…”

The Potential of Evaporation Boats Waste as a Crucible Material for Casting: A Review

“…The hardness and density values increase with a long holding time, while porosity decreases with decreasing firing holding time; the process of burning crucible material will become more perfect due to the holding time at the combustion temperature used. [41] Analyze the effect of the green body heating rate on the mechanical and physical properties of crucible materials such as compressive strength, hardness, and microstructure made from evaporation boats waste with a mixture of kaolin, graphite, and fire-resistant cement. The heating rate parameter is also necessary because it determines the time needed for the firing process.…”